River floods may cause diseases. Describe a disease which may be spread by a river flooding

Cholera spreads when sanitation is poor
Organisms from sewage find their way into drinking water
It is caught by eating or drinking something that has been contaminated by the waste of a person who has Cholera
Causes diarrhoea, violent vomiting, and cramp
The victim loses liquid causing dehydration
The disease can kill but only if not treated straight away.
The only thing to stop the spread of Cholera is Education